The black abolitionist henry highland garnet decried those who wished to rise in rebellion to throw off their shackles of slavery, instead insisting on a more peaceful means of protest.

This is true. He supported ideas of taking political action instead of rising in rebellion. He believed that African-Americans should have their own peace of land where they could live freely and not suffer from harassment. He also supported the idea of not buying anything that was made by slaves which was also a political action.